Longitudinal correlations from fluctuating strings in Pb-Pb, p-Pb, and p-p collisions

TL;DR

This paper presents a semi-analytic model with fluctuating strings to reproduce rapidity spectra and two-particle correlations in high-energy Pb-Pb, p-Pb, and p-p collisions, aligning well with LHC data.

Contribution

It introduces a universal framework using longitudinally extended strings with fluctuating endpoints to model particle correlations across different collision systems.

Findings

Successfully reproduces rapidity spectra and correlations in LHC collisions.

Provides bounds for end-point fluctuations and two-particle correlations.

Aligns well with recent ATLAS experimental data.

Abstract

In a framework of a semi-analytic model with longitudinally extended strings of fluctuating end-points, we demonstrate that the rapidity spectra and two-particle correlations in collisions of Pb-Pb, p-Pb, and p-p at the energies of the Large Hadron Collider can be universally reproduced. In our approach, the strings are pulled by wounded constituents appearing in the Glauber modeling at the partonic level. The obtained rapidity profile for the emission of hadrons from a string yields bounds for the distributions of the end-point fluctuations. Then, limits for the two-particle-correlations in pseudorapidity can be obtained. Our results are favorably compared to recent experimental data from the ATLAS Collaboration.